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Finding the Fourth Proportional to 219,389.70, 328,987.35 and 101,097.30

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Solution

The fourth proportional to 219,389.70, 328,987.35 and 101,097.30 is: 151,601.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,389.70 : 328,987.35 = 101,097.30 : x
  2. Step 2: Convert to fraction form
    219,389.70/328,987.35 = 101,097.30/x
  3. Step 3: Cross multiply
    219,389.70x = 328,987.35 × 101,097.30
  4. Step 4: Simplify right side
    219,389.70x = 33,259,732,819.16
  5. Step 5: Solve for x
    x = 33,259,732,819.16/219,389.70
  6. Step 6: Final answer
    x = 151,601.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.